Gravely Convertible 10 Shop Manual page 8

Disassembly of Carburetor
1. Remove carburetor from engine.
2. Remove bowl nut, gasket and bowl. When carburetor has bowl drain, remove drain spring, spacer (when
used), plug and gasket from inside of bowl.
3. Remove float pin, float, needle and needle seat. Check float for dents, leaks and wear on float lip or in
float pin holes.
4. Remove bowl ring gasket.
5. Remove idle fuel adjusting needle, main fuel adjusting needle and springs.
6. Do not remove choke and throttle plates and shafts. If these parts are worn, replace carburetor assembly.
Assembly of Carburetor
1. Install needle seat, needle, float and float pin.
2. Set float level. With carburetor casting inverted and float resting lightly against needle in its seat, there
should be 11/64" plus or minus 1/32 of an inch clearance between machined surface of casting and free
end of float (side opposite needle seat).
3. Adjust by bending lip of float with small screwdriver.
4. Install new bowl ring gasket, new bowl nut gasket and bowl nut. Tighten securely after making sure bowl
is centered on gasket.
5. Install main fuel adjustment needle. Turn in until needle seats in nozzle and back out two turns.
6. Install idle fuel adjustment needle. Back out approximately 1-1/2 turn after seating lightly against jet.
CAUTION: DO NOT USE FORCE ON ADJUSTMENT NEEDLES.
Figure 3 Side Draft Carburetor
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